Home / 839,808,793.20-1,259,713,189.80-257,632,892.40

Finding the Fourth Proportional to 839,808,793.20, 1,259,713,189.80 and 257,632,892.40

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Solution

The fourth proportional to 839,808,793.20, 1,259,713,189.80 and 257,632,892.40 is: 386,449,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,793.20 : 1,259,713,189.80 = 257,632,892.40 : x
  2. Step 2: Convert to fraction form
    839,808,793.20/1,259,713,189.80 = 257,632,892.40/x
  3. Step 3: Cross multiply
    839,808,793.20x = 1,259,713,189.80 × 257,632,892.40
  4. Step 4: Simplify right side
    839,808,793.20x = 324,543,552,682,604,160
  5. Step 5: Solve for x
    x = 324,543,552,682,604,160/839,808,793.20
  6. Step 6: Final answer
    x = 386,449,338.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.